Vacuum friction closure



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UNHTD) STATES rarawr caricia.

CHAR-LES HAI'MER, OF QUEENS, YORK, ASSIGNOR T0 AMERCAN METAL CAP COMPANY, 0F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

VACUUM FRICTION CLOSURE.

Application led February 1, 1921. Serial No. 441,550.

T 0 all whom t may Concern.:

Be it known that l, CHARLES HAMMER, a citizen of the United States, residing at Queens, in the county of Queens and State of New York, have invented certain new and useful Improvements in Vacuum Friction Closures, of which the following is a specification. 1

This invention relates to closures for containers of various kinds, but more particu larly of the wide mouthed variety having a straight outer cylindrical wall, an object of the invention being to provide an improved closure having a depending flange or band of fixed and permanent diameter, the lower marginal edge of which' is constructed to be bent inwardly and upwardly to so engage a compressible or expansible gasket that the same will be deformed into firm engagement with the jar.

A further object of this invention is to provide a closure wherein a detachable band,

`which constitutes the side wall or skirt of the band closure, is provided at its end with readily disengageable interconnecting or locking means such as a tongue or projection, and in which the. band is also provided with a projecting portion loca-ted in position to be forced against the gasket to expand the same upon the jar.

A further object of this invention is to provide a closure. of the vacuum friction type adapted to be applied to a container, such as a straight wall jar. wherein the depending band or skirt which may be detachable from or integral with the top of the closure is provided with a projecting portion or edge located in position to be forced into the, gasket after the closure has been applied in position on the jar or container, thereby compressing or contracting a part of the gasket and expanding a part firmly against the jar.

-ln the accompanying drawings showing embodiments of my invention. Fig. 1 shows a jar with the closure applied, being shown partly in section. .g

Fig. 2 shows in sect-ion one means for applying the closureto a jar.

Fig. 3 shows `the closure separate. partly in section.

Fig. 4 shows separately the, band for the closure.

Fig. 5 is a partial section enlarged of theclosure and jar.

Fig. 6 shows another form of closure.

Fig. 7 shows the band for the latter.

Fig. 8 shows a one-piece closure; and Fig. 9l is a section through the same.

As shown in4 Figs. 1-7 the closure may be formed of two parts, a top part having a flange portion, and a band part cooperating with the flange part.

The closure in this instance is shown as comprising a top portion 2 preferably flat having a flange portion denoted generally by 3, that extends horizontally outward and which may have a relatively short depending vertical portion el, see Fig. 3. The flange portion 3 may be connected with the top central portion by an arched portion 5, adapted to engage the rounded top of the jar wall at the upper portion 6 of the jar'T. This container or jar preferably has its upper portion 6 formed with a straight or cylindrical outer wall. VVhen applied the downward pressure on top of the\flange of the lclosure will cause this arche portion to rest on the top of the ja'r as shown.

ln connect-ion with this part of the closure, l provide a detachable band. 8 in the form of an open vertical ring. with its upper portion bent inwardly `to form a flange 19 adapted to rest on top of the flange wall 3 of the top member, and to engage the upper wall of the depending flange 4 of the top member' as shown in Fig. 3. The lower edge of the band 8 is preferably given a bend inwardly at its margin 9. for the purpose of retaining insideof the flange portions of the two members, a compressible gasket 10, as shown` in Fig. 8, which shows the closure before being applied to the container.

The end portions of the band 8 are preferably in the form of one or a pair of tongues 11, 12 being shown as each bent back to engage the other tongue and interfolded, as in Fig. 1, to permit easy removal of the band after sealing the closure on the jar. In Figs. (i and T a similar band is shown having a projecting tongue 13 on top that will extend over and overlap the adjacent end portion. While the band ends are not interlocked the sealing means will retain them in proper position, and this tongue lil can be grasped to loosen the band from one end and permit the easy removal.

'lhe closure as set forth is placed on top of the liar. and then suitable means are provided to engage the top of the flange portion of thisclosure wall 19 of the band flange and by another member engage the lower margin of the band. One form of pressing means or chuck is indicated in Fig. 2. in which the jar T is placed in a holding member 14 provided with a groove 1:3 formed in the top wall adjacent thc bore. A follower or plunger 16 is provided to engage the top flange 19 of the closure or band, and a channel 1H is provided to admit the arched portion of thc closure. The jar is placed in the, body 11 and the closure applied. and then the plunger is brought down or advanced relative to the body 1-t by raising the. body and `iar. The cha-nnel portion 15 will engage the lower projecting margin 19 of the closure band. and being advanced rclative'to the 0pposed wall 1T of the plunger. the margin of the band will be deflected inwardly and upwardlyby the channel wall of the holder. and will thus be forced against and into the bottom wall of the gasket 10, in the form of an open bead. substantially as shown in Fig. 3. This will obviously press the gasket vertically` and being yieldable the gasket will be forced laterally in both directions, and expanded between the vertical wall of the closure-and the outer wall of the jar, and thereby will very tightly secure the closure on the jar bythe tight fit of the gasket between the vertical wall of the closure fiange and the outer wall of the jar. The inwardly deflected marginal portion 9 of the band will also operate to Vgrip the gasket and prevent its displacement, and will have a further effect of 'ausing an extension of the gasket downwardly against the jar wall as shown. This will have a further advantageous result in that the free or raw edger of the band will be forced into the gasket and practically embedded in the gasket to prevent corrosion of this edge and itcan not act to engage the hands of the user in handling the jar. or in removing the closure.

When itl is desired to remove this closure from a filled jar, the interlocked tongue portions 11 and 12 can be engaged by the finger nail and easily bent outwardto free. the ends. thus forming a means to permit the loosening of the band at one or both-ends. This will serve to permit removal of the band -and the' gasket, being thereupon released from compression, the top member is verv easily lifted off. With the form shown in Fig. '7. the tongue 13is simply grasped to remove the bandand the closure becomes loosened at once.

Tn Figs. 8 and 9 substantially the same form of closure except that it is formed of lone piece of metal having an integral band member instead of -a separa-tc or detachable band member. llore the closure comprises a top 2() having a horizontal flange portion 21. an arch 22, a vertically depending band or flange wall 22;. with the lower marginal portion thereof bent. abruptly inward and upward in the same manner as the-marginal bent 'portion tl to rcompress the gasket rl`he band or depending flange or hand in either form thereof shown herein it will be observed is of fixed and permanent diameter. sol that when pressure is exerted upon the top and bottomof'the band there is no deforming of the side or vertical wall of the band. and consequently when the lower marginal edge 9 of the band is bent inwardly and upwardly against the gasket. it deforms it into firm engagement with the jar. and this without changing the shape of the verticalr side wall of the band.

It will thus be seen that I have provided an improved closure, in which the gasket is confined in'a flange extending outwardly and downwardly. being formed from either a single piece of metal. or of a top piece and a band. and that the lower margin of the flange is deflected inwardly vand upwardly to form a bead that will be partly embedded inthe gasket and will serve to compress the gasket-.at one point between the flange and the jar vwall so as to expand it at another point against the jar wall, and which at the same time is adapted to hold the gasket against displacement. It will be understood that I have further provided a novel method of sealing the closure on a container, which consists in turning the margin of the flange wall inwardly and upwardly while holding the top of the flange. portion of the cap so that this band orbead is formed merely by pressure from opposite directions and without any lateral or internal pressure being exerted on the band of the closure.

1t will be understood that by describing in detail herein any., particular form7 structure, or arrangement it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art. y

.lVhat I claim is l. A jar closure comprising atop portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided with aV depending flange of fixe-d and permanent diameter. agasket positioned between said flange and jar, the lower edge of the flange being turned inwardly and upwardly against the gasket thereby deforming said gasket into firm engagement with the jar.

2. A closure comprising a top portion adapted to engagethe top of a jar and having a part thereof extending outwardly beyond the jar and provided with `a depending flange of fixed and permanent diameter having detachable ends, a gasket positioned between said flange and jar, the lower edge ofthe fiange being turned inwardly and upwardly against the gasket thereby deforming said gasket into firm engagement with the 3, A jar closure comprising a top portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided with a depending sealing band of fixed and permanent diameter having detachable ends, a gasket positioned betwen said band and jar. the` lower edge of the band being turned inwardly and upwardly against the gasket thereby deforming said gasket into firm engagement with the jar7 said band terminating in locking means Constructed to permit ready disengagementl and removal of the band.

4. A jar closure comprising a top portion arched to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided with a depending sealing band of fixed and permanent diameter having detachable ends, a gasket positioned between said band and jar, the lower edge of the band being turned inwardly and upwardly against the gasket thereby deforming said gasket into firm engagement with the jar, said band having .manually releasable means for detachably interconnecting the ends thereof.

5. A jar closure comprising a top portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the j ar and provided with a depending flange of fixed and permanent diameter having detachable ends, a gasket positioned between said flange and jar, the lower edge of the flange being turned inwardly and upwardly against the gasket thereby deforming said gasket into firm engagement with the jar` said flange having means for interconnecting the ends thereof.

6. A jar closure comprising a top portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided wit'h a detachable depending sealing band of fixed and permanent diameter and having detachable ends. a gasket positioned between said fiange and jar, the lower edge of the flange being bent inwardly and upwardly against the gasket thereby deforming the same into firm engagement with the jar.

7. A jar closure comprising a top portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided with a detachable depending sealing band of fixed and permanent diameter and having detachable ends, a gasket positioned between said flange and jar7 the lower edge of the flange being bent inwardly and upwardly against the gasket thereby deforming the same into firm engagement with the jar, said band having means for interconnecting the detachable ends thereof.

8. A jar closure comprising a top portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided with a depending sealing band of fixed and permanent diameter and having detachable ends and having its lower edge inwardly and upwardly bent to form an annular channel for the reception of a gasket, a gasket positioned between said band and ar with the lower edge of the band bent inwardly and upwardly against said gasket thereby to deform the same by compressing it at one point and expanding it at another into firm engagement with the jar.

9. A jar closure comprising a top portion adapted to engage the top of a jar and having a part thereof extending outwardly beyond the jar and provided with a depending sealing band of fixed and permanent diameter and having detachable ends and having its lower edge inwardly and upwardly bent to form an annular channel for the reception of a gasket,'a gasket positioned between said band and jar with the lower edge of the band bent inwardly and upwardly against said gasket thereby to deform the same by compressing it at one point and expanding it at another into firm engagement with the jar, they detachable ends of said band having means for interlocking said band of fixed and permanent diameter, a-

gasket positioned between said band and container, and then pressing the lower edge of said band inwardly and upwardly against the gasket thereby to deform the same intoY firm engagement with the container.

11. The method of forming and sealing a closure on a container, which consists in providing a closure comprising a top` adapted t0 engage the top of the container and extend beyond the same, a depending sealing band having a fixed and permanent diameter and an upwardly extending lower edge, and a gasket positioned between said band and container, and then exerting pressure at the top of said closure and on said' inwardly extending lowerv edge of the band, thereby to compress the latter into engagement with the gasket at one point and so deform it around the same as to expand the gasket at another point around the same into firm engagement with the container without ing sealing hand of fixed and permanent diameter and having detachable interconneeted ends, a gasket positioned between said hand and container, and then pressing the lower edge of said band inwardly and upl wardly kagainst the gasket thereby to defoi'm the same into firm Iengagement with the container.

Signed at New York city,`N. Y., on January 28th,]1921.

CHARLES HAMMER.

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